Improvement in attachments to veneer-cutting machines



J". D.- McEACHERN.

ATTACHMENTS T0 VENEER-CUTTING MACHINES.

Patented Aug. 22,1876.

mmesses.

N. PETERS, PHOTO-UTNDGRAPHEF. WASHlNGTON. D Cv Inventor.

UNITED STATES PATENT OFFICE.

JOHN D. MGEAOHERN, or HARRISTON, ASSIGNOR To SAMUEL WALLACE,

- or SEAFORTH, ONTARIO, CANADA. e

IMPROVEMENT IN ATTACHMENTS TO VENEER-CUTTING MACHINES. I

Specification forming part of Letters Patent No. 181,461, dated August22, 1876; application filed November 23, 1875.

To all whom it may concern for barrels, cheese-boxes, band-boxes, &c.;'

and consists in an attachment for either beveling or rounding ofi theedges of the veneer as the sheets are being cut from the log, as

and for the purpose hereafter specified.

Figure 1 is a section, showing the machine in operation. Fig. 2 is across view of improvement. Fig. 3 is a detail of cutters for beveling.Fig. 4 is a detail of cutters for rounding off.

A is the log from which the veneer is being cut. The log is made torevolve on the center of the lathe, and the knife B, which is the fulllength of the log, is so set that it shaves from the log a strip ofveneer the length of the circumference of the log. y I

To this portion of the machine I lay no claim; but for the purpose ofbeveling or otherwise finishing the edges of these sheets as they arethus produced, my invention immediately relates. O G are knife-frames,attached and worked as hereafter specified. Within each of these framesis a knife, 0, set so as to cut at a bevel, and a knife, d, for cuttingoff the ragged edge. The frames 0 O are pivoted upon a rod, D, and areheld in position by the blocks E E. Within the blocks E E I adjustcylindrical nuts 0 e, which fit the screw F, but

are loose within the said blocks, except when pinched by the set-screwsf f, which action connects each block to its respective nut, and theythen move with them as the screw F is turned.

By this arrangement the distance between the two frames 0 G may bealtered at will, or

A immediately before the veneer is cut th'erefrom.

Some boxes are made with only one edge beveled, the other being roundedoff. For this purpose the knife-frame- G is intended, the knife 9 beingmade the required shape. When the rounding-offknife is being used one ofthe frames 0 is'thrown back, as shown by dotted lines in Fig. 1, inwhich position. the frame G is put when the two others are in operation.

In turning down a log into veneers it often happens that there areplaces in the log defective, making it impossible to get a piece ofveneer the full length. In this event the sheet of veneer is dividedinto two by throwing forward the knife 9. 7

H is a pencil-holder, placed upon the inside of one of the knife-framesO, for the purpose of marking the veneer, so that all the barrels madefrom the pieces of veneer thus marked are the same size, provided theframes 0 C or frames (3 and G are maintained in the same relativeposition to each other, and that the opposite edge of the veneer be bentto and fastened at the pencil-mark referred to.

What I'claim as my invention is- The beve'ling-knives O G andcutting-off knife d held within the frames 0 G, pivoted upon the rod D,in combination with blocks E E and screw F, arranged and operatedsubstantially as described, and for the purpose specified. Harriston,Ontario, November 10, 1875.

J. D. MGEAOEIERN.

Signed in the presence of- SAML. ROBERTSON, TH. V. ROBINSON.

